Needed to select time zone with a reconizable region for each unique offset
- Daylight savings time means that unique names will shift, changing the names
- There are actually ~38 unique timezones depending on daylight savings time.
- London which is known for GMT actually observers daylight savings time.
| # | Offset | Time Zone | Region | City | Skips DST |
|---|---|---|---|---|---|
| 1 | -09:00 | America/Adak | America | Adak | - |
| 2 | -09:00 | America/Atka | America | Atka | - |
| 3 | -09:00 | Etc/GMT+9 | Etc | GMT+9 | Yes |
| 4 | -09:00 | Pacific/Gambier | Pacific | Gambier | - |
| 5 | -09:00 | SystemV/YST9 | SystemV | YST9 | Yes |
| 6 | -09:00 | US/Aleutian | US | Aleutian | - |
| 7 | -09:00 | ical4j~3a8ba8b0-4662-4af0-b1ce-da8963248936 | ical4j~3a8ba8b0-4662-4af0-b1ce-da8963248936 | - | |
| 8 | -09:00 | ical4j~423dce66-45e5-41d3-aeff-5695b2b2579c | ical4j~423dce66-45e5-41d3-aeff-5695b2b2579c | - | |
| 9 | -09:00 | ical4j~6d6d0d1b-7ebe-44fe-b448-9ff4ed50e2a3 | ical4j~6d6d0d1b-7ebe-44fe-b448-9ff4ed50e2a3 | Yes | |
| 10 | -09:00 | ical4j~a36f5093-6cf5-4de4-8965-c1889cd29de6 | ical4j~a36f5093-6cf5-4de4-8965-c1889cd29de6 | Yes |
| # | Offset | Time Zone | Region | City | Skips DST |
|---|---|---|---|---|---|
| 1 | -11:00 | Pacific/Pago_Pago | Pacific | Pago Pago | - |
| 2 | -10:00 | Pacific/Honolulu | Pacific | Honolulu | - |
| 3 | -09:30 | Pacific/Marquesas | Pacific | Marquesas | - |
| 4 | -09:00 | America/Adak | America | Adak | - |
| 5 | -08:00 | America/Anchorage | America | Anchorage | - |
| 6 | -07:00 | America/Los_Angeles | America | Los Angeles | - |
| 7 | -06:00 | America/Denver | America | Denver | - |
| 8 | -05:00 | America/Chicago | America | Chicago | - |
| 9 | -04:00 | America/New_York | America | New York | - |
| 10 | -03:00 | America/Halifax | America | Halifax | - |
| 11 | -02:30 | America/St_Johns | America | St Johns | - |
| 12 | -02:00 | Atlantic/South_Georgia | Atlantic | South Georgia | - |
| 13 | -01:00 | Atlantic/Cape_Verde | Atlantic | Cape Verde | - |
| 14 | +00:00 | Greenwich | Greenwich | Yes | |
| 15 | +01:00 | Europe/London | Europe | London | - |
| 16 | +02:00 | Europe/Gibraltar | Europe | Gibraltar | - |
| 17 | +03:00 | Europe/Moscow | Europe | Moscow | - |
| 18 | +03:30 | Asia/Tehran | Asia | Tehran | - |
| 19 | +04:00 | Asia/Dubai | Asia | Dubai | - |
| 20 | +04:30 | Asia/Kabul | Asia | Kabul | - |
| 21 | +05:00 | Asia/Karachi | Asia | Karachi | - |
| 22 | +05:30 | Asia/Kolkata | Asia | Kolkata | - |
| 23 | +05:45 | Asia/Kathmandu | Asia | Kathmandu | - |
| 24 | +06:00 | Asia/Dhaka | Asia | Dhaka | - |
| 25 | +07:00 | Asia/Bangkok | Asia | Bangkok | - |
| 26 | +08:00 | Australia/Perth | Australia | Perth | - |
| 27 | +09:00 | Asia/Tokyo | Asia | Tokyo | - |
| 28 | +09:30 | Australia/Darwin | Australia | Darwin | - |
| 29 | +10:00 | Australia/Sydney | Australia | Sydney | - |
| 30 | +10:30 | Australia/Lord_Howe | Australia | Lord Howe | - |
| 31 | +11:00 | Pacific/Guadalcanal | Pacific | Guadalcanal | - |
| 32 | +12:00 | Pacific/Auckland | Pacific | Auckland | - |
| 33 | +12:45 | Pacific/Chatham | Pacific | Chatham | - |